Introduced beartype (#3460)

### What problem does this PR solve?

Introduced [beartype](https://github.com/beartype/beartype) for runtime
type-checking.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

graphrag/graph_extractor.py

@@ -9,8 +9,8 @@ import logging
 import numbers
 import re
 import traceback
+from typing import Any, Callable
 from dataclasses import dataclass
-from typing import Any, Mapping, Callable
 import tiktoken
 from graphrag.graph_prompt import GRAPH_EXTRACTION_PROMPT, CONTINUE_PROMPT, LOOP_PROMPT
 from graphrag.utils import ErrorHandlerFn, perform_variable_replacements, clean_str